121637133077 has 2 divisors, whose sum is σ = 121637133078. Its totient is φ = 121637133076.

The previous prime is 121637133067. The next prime is 121637133089. The reversal of 121637133077 is 770331736121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103649226916 + 17987906161 = 321946^2 + 134119^2 .

It is a cyclic number.

It is not a de Polignac number, because 121637133077 - 2²⁰ = 121636084501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121637133067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60818566538 + 60818566539.

It is an arithmetic number, because the mean of its divisors is an integer number (60818566539).

Almost surely, 2^121637133077 is an apocalyptic number.

It is an amenable number.

121637133077 is a deficient number, since it is larger than the sum of its proper divisors (1).

121637133077 is an equidigital number, since it uses as much as digits as its factorization.

121637133077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 111132, while the sum is 41.

Adding to 121637133077 its reverse (770331736121), we get a palindrome (891968869198).

The spelling of 121637133077 in words is "one hundred twenty-one billion, six hundred thirty-seven million, one hundred thirty-three thousand, seventy-seven".